Method and means for repairing cracks in castings



July 5, 1 938. J L os 2,122,842

METHOD AND MEANS FOR REPAIRING CRACKS IN CASTINGS Filed April 22, 1956 2 Sheets-Sheet l RIO 70elemos I nvento'r.

Attorneys fimaoiizmm July 5, 1938 J. LEMOS 2,122,842

METHOD AND MEANS FOR REPAIRING CRACKS IN CASTINGS Filed April 22, 1936 2 Sheets-Sheet 2 Invefltor Joe 287 106 5 Attorneys Patented July 5, 1938 UNITED STATES PATENT OFFICE METHOD AND MEANS FOR REPAIRING CRACKS IN CASTINGS Joe Lemos, Salinas, Calif. I v Application April 22, 1936, Serial No. 725,861

3 Claims. (01. 29-1564) This invention appertains to newand useful improvements in means and method for repairing cracks r openings in castings such as automobile engineblocks, and, heads, as well as other struc-r l tures of similar formation.

The principal object of the present invention is to provide a method of repairing cracks and castingswherein a cement compound is first inserted in the cracks and subsequently a wedge is driven 10 in the cracks to completely seal the aperture.

Another important object of the invention is to provide means for repairing, castings with cracks in the form of a wedge which can be driven into the crack of a casting in such a manner as to completely' fill the cracks and overlap the outer confines thereof.

These and various other important objects and advantages of the'invention will become apparent to the reader of the following specification.

In the drawings:

Figure 1 represents a fragmentary verticalsectional view through an engine head showing the means for repairing a crack therein.

Figure 2 is a fragmentary horizontal sectional 25 view taken substantially on line 22 of Figure 1. Figure 3 is a fragmentary vertical sectional view through a slightly modified form of the -means and method for repairing engine heads.

Figure 4 represents a perspective view of a 30 wedge formed to follow a definite crack.

Figure 5 is a cross-sectional view taken substantially on line 5- 5 of Figure 4.

Referring to the drawings, wherein like numerals designate like parts, it can be seen in Figs. 35 1 and 2, that the numeral 5 represents the usual cylinder of an engine construction while the numeral 6 represents the water jacket.

Assuming that the crack is in the water jacket 6, and denoted by the numeral 1, it can be seen 40. that the crack is first spread to receive the cement compound 8, after which the wedge strip 9 is suitably bent and driven into the crack so as to fill the same throughout its entire length and then completely driven in so as to overlap the outside of the crack as suggested in Figure 2, and denoted clearly by the numeral I0.

It is preferable as shown in Figure 1, that the outer edge portion of the wedge shaped member 9 have a bead-like head II which will flatten out over the outer limits of the crack I. As is shown in Figure 3, the method is somewhat different, in that if the crack is split simply on top of the 5 water jacket 6, it is preferable that openings l2 be bored downward through the side walls and these bores are preferably filled with the cementitious compound 8 as well as the transverse crack in the top of the jacket. After this, the wedge 10 9a with its bead-like-edge portion lla'is driven down into the crack and the bead-like edge portion Ila flattens over the outer limits of the crack. r

In this connection, it is preferable that the edge portions of the wedge 9a be cut away, as at [3 under the beading Ila so that the upper end portions of the column of cementitious compound 8 will interlock with the wedge 9a, thus serving to retain the wedge permanently in place.

While the foregoing specification sets forth the invention in specific terms, it is to be understood that numerous changes in the shape, size, and materials may be resorted to without departing from the spirit and scope of the invention as claimed hereinafter.

Having described the invention what is claimed as new is:--

1. A method of repairing cracks in'castings, consisting in first placing in the crack a cementitious compound and subsequently driving into the crack a wedge of ductile material and ham mering the outer portion of the wedge to flatten the same over the outer limits of the crack.

2. Means for repairing cracks in castings, comprising cementitious material disposed in the cracks and a wedge for cooperating with'said material, said wedge having a recess in its end overlapping and confining the material.

3. A method of repairing cracks in castings, 40 comprising in first boring a hole in the casting at an end of the crack, then placing cementitious material in the crack and in the hole and subse: quently driving into the crack a wedge of ductile material, said wedge having a projecting part at one end for fitting over the material in the hole.

.JOE LEMOS. 

